<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Behavior;

/**
 * 系统行为扩展：页面Trace显示输出
 */
class ShowPageTraceBehavior
{
    protected $tracePageTabs = ['BASE'  => '基本', 'FILE' => '文件', 'INFO' => '流程', 'ERR|NOTIC' => '错误', 'SQL' => 'SQL',
                                'DEBUG' => '调试',
    ];

    // 行为扩展的执行入口必须是run
    public function run(&$params)
    {
        if (!IS_AJAX && !IS_CLI && C('SHOW_PAGE_TRACE')) {
            echo $this->showTrace();
        }
    }

    /**
     * 显示页面Trace信息
     * @access private
     */
    private function showTrace()
    {
        // 系统默认显示信息
        $files = get_included_files();
        $info = [];
        foreach ($files as $key => $file) {
            $info[] = $file.' ( '.number_format(filesize($file) / 1024, 2).' KB )';
        }
        $trace = [];
        $base = [
            '请求信息' => date('Y-m-d H:i:s',
                    $_SERVER['REQUEST_TIME']).' '.$_SERVER['SERVER_PROTOCOL'].' '.$_SERVER['REQUEST_METHOD'].' : '.__SELF__,
            '运行时间' => $this->showTime(),
            '吞吐率'  => number_format(1 / G('beginTime', 'viewEndTime'), 2).'req/s',
            '内存开销' => MEMORY_LIMIT_ON ? number_format((memory_get_usage() - $GLOBALS['_startUseMems']) / 1024,
                    2).' kb' : '不支持',
            '查询信息' => N('db_query').' queries '.N('db_write').' writes ',
            '文件加载' => count(get_included_files()),
            '缓存信息' => N('cache_read').' gets '.N('cache_write').' writes ',
            '配置加载' => count(C()),
            '会话信息' => 'SESSION_ID='.session_id(),
        ];
        // 读取应用定义的Trace文件
        $traceFile = COMMON_PATH.'Conf/trace.php';
        if (is_file($traceFile)) {
            $base = array_merge($base, include $traceFile);
        }
        $debug = trace();
        $tabs = C('TRACE_PAGE_TABS', null, $this->tracePageTabs);
        foreach ($tabs as $name => $title) {
            switch (strtoupper($name)) {
                case 'BASE': // 基本信息
                    $trace[$title] = $base;
                    break;
                case 'FILE': // 文件信息
                    $trace[$title] = $info;
                    break;
                default: // 调试信息
                    $name = strtoupper($name);
                    if (strpos($name, '|')) {
// 多组信息
                        $names = explode('|', $name);
                        $result = [];
                        foreach ($names as $name) {
                            $result += isset($debug[$name]) ? $debug[$name] : [];
                        }
                        $trace[$title] = $result;
                    } else {
                        $trace[$title] = isset($debug[$name]) ? $debug[$name] : '';
                    }
            }
        }
        if ($save = C('PAGE_TRACE_SAVE')) {
            // 保存页面Trace日志
            if (is_array($save)) { // 选择选项卡保存
                $tabs = C('TRACE_PAGE_TABS', null, $this->tracePageTabs);
                $array = [];
                foreach ($save as $tab) {
                    $array[] = $tabs[$tab];
                }
            }
            $content = date('[ c ]').' '.get_client_ip().' '.$_SERVER['REQUEST_URI']."\r\n";
            foreach ($trace as $key => $val) {
                if (!isset($array) || in_array_case($key, $array)) {
                    $content .= '[ '.$key." ]\r\n";
                    if (is_array($val)) {
                        foreach ($val as $k => $v) {
                            $content .= (!is_numeric($k) ? $k.':' : '').print_r($v, true)."\r\n";
                        }
                    } else {
                        $content .= print_r($val, true)."\r\n";
                    }
                    $content .= "\r\n";
                }
            }
            error_log(str_replace('<br/>', "\r\n", $content), 3, C('LOG_PATH').date('y_m_d').'_trace.log');
        }
        unset($files, $info, $base);
        // 调用Trace页面模板
        ob_start();
        include C('TMPL_TRACE_FILE') ? C('TMPL_TRACE_FILE') : THINK_PATH.'Tpl/page_trace.tpl';
        return ob_get_clean();
    }

    /**
     * 获取运行时间
     */
    private function showTime()
    {
        // 显示运行时间
        G('beginTime', $GLOBALS['_beginTime']);
        G('viewEndTime');
        // 显示详细运行时间
        return G('beginTime', 'viewEndTime').'s ( Load:'.G('beginTime', 'loadTime').'s Init:'.G('loadTime',
                'initTime').'s Exec:'.G('initTime', 'viewStartTime').'s Template:'.G('viewStartTime',
                'viewEndTime').'s )';
    }
}
